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CULA • View topic - Doubt about CULA on multiple GPUs

Doubt about CULA on multiple GPUs

General CULA Dense (LAPACK & BLAS) support and troubleshooting. Use this forum if you are having a general problem or have encountered a bug.

Doubt about CULA on multiple GPUs

Postby cding » Fri Jul 22, 2011 11:52 am

cding
 
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Re: Doubt about CULA on multiple GPUs

Postby john » Fri Jul 22, 2011 12:07 pm

Either should work. culaSelectDevice is merely a passthrough for cudaSelectDevice so that you are not forced to invoke the CUDA toolkit if you only need the Host interface in CULA.
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Re: Doubt about CULA on multiple GPUs

Postby cding » Mon Jul 25, 2011 10:54 am

cding
 
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Re: Doubt about CULA on multiple GPUs

Postby john » Mon Jul 25, 2011 1:59 pm

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Re: Doubt about CULA on multiple GPUs

Postby cding » Tue Jul 26, 2011 9:49 am

cding
 
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Re: Doubt about CULA on multiple GPUs

Postby suzannepk » Tue Mar 20, 2012 11:31 am

I am trying to use some of the cula fucntions listed in the code given above, for example culaGetExecutingDevice, but my compiler (pgi) does not recognize them even though I have other cula functions, for example cula_dgesv, compiling and work in my code. I have a file cula_dense.h which defines culaGetExecutingDevice. Do I need to include this file in the fortran file to get use of functions such as culaGetExecutingDevice or link to it specifically or is there a flag I need to set in my makefile? --for example I need -lcula_lapack and -lcula_lapack_fortran to use cual_dgesv.

The list of cula and cuda flags that i am currently using is -lcula_core -lcula_lapack -lcula_lapack_fortran -lcublas -lcudart -lpthread -Mcuda

I have tried this both with the host and device interface approaches. I am still learning cuda and would appreciate any suggestions or advice.
suzannepk
 
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Re: Doubt about CULA on multiple GPUs

Postby john » Tue Mar 20, 2012 11:47 am

Suzanne,
I sent an update package to your system administrators (Oscar and Richard) which contains many updates and new examples for Fortran users (especially PGI-Fortran). Was this packet forwarded to you by these gentlemen?

John
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Re: Doubt about CULA on multiple GPUs

Postby suzannepk » Tue Mar 20, 2012 12:59 pm

Yes, thanks. I'll look there. The multi-gpu example is in C, but I am leaning to translate.
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Re: Doubt about CULA on multiple GPUs

Postby john » Wed Mar 21, 2012 7:52 am

You'll want to check out the fortranDeviceInterface example - it will be very helpful for this effort.
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